*{margin: 0;padding: 0;list-style-type: none;text-decoration: none;}
.div1{width:600px;height: 300px;margin: 0 auto;top:0px;position: relative;}
.div2{width:600px;height:300px;overflow: hidden;position: absolute;}
.div3{width: 1200px;height: 300px;position: absolute;left: 0;z-index: 1;background: url("1.jpg") no-repeat 0 0;}
.div2 ul{width:1800px;height: 300px;position: absolute;left: 0;z-index: 3;}
.div2 ul li{width:600px;height: 300px;float: left;line-height: 300px;font-size: 30px;text-align: center;color:#000000;
           text-shadow:4px 4px 8px #ffffff,-4px -4px 8px #ffffff,-4px 4px 8px #ffffff,4px -4px 8px #ffffff;
}
span{position: absolute;cursor:pointer;width:30px;height: 40px;font-size: 30px;line-height: 40px;text-align: center;color: #ffffff;background: #000000;top:50%;margin-top: -20px;z-index: 20;}
.left{left: 0;}
.right{right: 0;}